I got myself 2x B3 servers with 1TB integrated storage, plus two B3 storage units for RAID 1 purposes.
Unfortunately I never really came to the point of really using them much, but pretty much stopped after I got home automation up and running.

Just bought me a set of these from Klingan (one server and one storage). I've installed MouettE's Jessie image and it works perfekt. Got the wifi working as well. Now next step is to do some rocket science and try to get the B3 boot from USB. Have to figure out which tools to use etc...